pulse rate vs heart rate

pulse rate and heart rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
pulse rate	Yes	No	No	No
heart rate	Yes	No	No	No

As nouns, pulse rate and heart rate are synonyms defined as:

pulse rate and heart rate: the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health

Other synonyms of pulse rate include pulse.

pulse rate (noun)	heart rate (noun)
the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health	the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health